DatePicker

// ── DatePicker ──
pub fn buildDatePicker(scope: *ui.Scope, cx: *ui.Cx) anyerror!*ui.Node {
    const dp = try W.DatePicker(.{ .placeholder = "Pick a date", .initial_year = 2026, .initial_month = 5 }).mount(scope, cx);
    return dp.wrapper;
}